<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>姓名案例_插值语法实现</title>

    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>

    <!-- 
     -->

    <div id="root">
        姓：<input type="text" v-model="firstName"><br><br>
        名：<input type="text" v-model="lastName"><br><br>
        姓名：<span>{{firstName.slice(0, 3)}}-{{lastName}}</span>
    </div>

    <script type="text/javascript">
        Vue.config.productionTip = false; // 阻止vue在启动时生成生产提示。

        const vm = new Vue({
            el: '#root',
            data: {
                firstName: '张',
                lastName: '三'
            }
        });
    </script>
</body>

</html>